Exhaust valve assembly of oil rotary vane vacuum pump

• Main Authors: WANG LEI, LU JIE, JIN MASUFUMI, WU QINGYUN, WU JIE, TANG YUJIA, RUAN YIYANG
• Format: Patent
• Language: Chinese; English
• Published: 28.10.2022
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

According to the technical scheme, the exhaust valve assembly of the oil rotary vane vacuum pump is characterized in that the exhaust valve assembly comprises an exhaust valve element and an exhaust baffle, a compression spring is arranged between the exhaust valve element and the exhaust baffle, a first supporting column and a second supporting column limit the compression spring, and dislocation of the compression spring is prevented; the exhaust valve element made of rubber is low in noise but can deform after being used for a long time, so that the sealing performance between the exhaust valve element and the exhaust port of the pump stator is weakened or even fails, the exhaust valve element cannot be normally used, and the metal gasket and the exhaust valve element are fixed, so that the exhaust valve element cannot be normally used. The anti-deformation capacity of the exhaust valve element is improved, the exhaust valve element is prevented from deforming after being used for a long time, and the serv